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T. F. OECHSLE L A. S. BANCROFT.

WINDOW OPERATiNG DEViCE.

APPucAloN HLED SEPT. 30, |915.

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T. F. OECHSLE L A. S. BANCROFT.

WINDOW OPERATING DEVICE.

APPLICATION FILED SEPT. 30, 19| 5.

Patented Augjzz, 1916.

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. @NNN T. F. OECHSLE & A. S. BANCROFT.'

WINDOW OPERATING DEVICE.

APPLICATION FILED SEPT. 3o, I9I5.

l ,l 95,258. Patented Aug. 22, 1916.

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THEODORE F. OECHSLE AND ALBERT S. BANCROFT, OF PHILADELPHIA, PENNSYLVANIA.

WINDOW-OPERATING DEVICE.

Specification of Letters Patent.

Patented Aug. 22, 1916.

To all whom 25 may concern.:

Be it known that we, Tnnononn F. OEoHsLE and ALBERT S. BANGROFT, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Window-Operating Devices, whereof the following is a specification, reference being had to the accompanying drawings.

The invention relates to an improved device for opening and closing windows or sashes, and one adapted to hold the sash open or closed or in any intermediate position, and more particularly to that class of devices which serve to operate simultaneously a series of closures.

It is a further object of our invention to provide a simple but effective mechanism, rigidly supported at the operating points, and capable of exerting ample force for controlling the sashes without distortion of the parts. Heretofore, such mechanisms Vhave employed longitudinally movable operating rods directly connected to the 'arms and levers for openingl and closing the individual sashes, with such construction, however, the lateral strains exerted-by the weight of the sashes tend to distort the operating rods, which greatly impair or destroy the eectiveness of the device. It is, therefore, im-

. portant to do away with such lateralstrains.

To this end, We employ longitudinally movable operating rods provided with a number of toothed racks intermeshing with rigidly pivoted geared pinions with which the arms and levers of each individual window operating mechanism are equipped, so that the mainoperating rods are free from any lateral strain and anyvmotion thereof'is equally transmitted to all sashes.

Referring to the accompanying drawings, Figure I, is an inside elevation of a window structure conveniently illustrating the adaptation of our invention thereto.r Fig. II, represents 'a horizontal sectional view indicated'by the arrows IIe-II in Figs. I and III. Fig.'III, illustrates a cross sectional view, the plane of`section` being designated by the arrows III-III, in Fig. I.

Mountedin the frame 1, are a series of sashes 2, which may be pivoted at 3, or 1n any convenient manner, provided that the opening edges of the sashes all lie in the same straight line. Loosely journaled in the brackets 5, which are attached to the sashes at a point remote from that at which they are hinged, are links 6, which serve to connect the sashes with the operating mechanism. These links are in turn pivoted at 7, and 8, to the arms 9, and l0, respectively, both of which are pivoted on shaft 11, in upper and lower portion. This shaft is supported in a bracket or other supporting means 12, which is rmly attached to the frame l, at a point between two adjacent sashes. p

Arms 9, and l0, are oppositely disposed on shaft l1, one leading to the sash on one side of the bracket and the other to the sash on the opposite side. In order that they may both exert outward or inward pressure on their respective sashes, at the same time, they are provided with gear pinions 13, and 14, which may be rotated in opposite directions. These pinions engage toothed racks 15, and 16, respectively. Each rack is composed of upper and lower plates 17, and 18, united by screw bolts 19, by which they are clamped in position upon rods 20, and 21, so as to be rigidly attached thereto. The racks are also prevented from getting out of alinement with their respective pinions by grooves 22, and 23, cut in brackets 12, which act as both supports and guides. In this way bracket 12, supports both the operative arms with their pinions and the rods with their racks, thereby carrying practically the entire weight of the structure, and at the same time furnishes a rigid pivot, so that the respective parts are subject to no strains other than those due to the actual operation. Furthermore, any strains on the pivot 11, due to the weight of the sashes will be eX- erted in the direction away from the sashes, and can therefore in no way affect rods 20 and 21, which are placed on the side of the pivot toward the sashes.

Rods 20, and 21, are arranged parallel to each other and also parallel to the opening edges of the windows. At one end, they are connected by a chain 25, which passes over an idler pulley 26, and'serves to convey any motion transmitted to the one, to the other. At the other end they are connected to cross heads 27, and 28, by means of guide rods 29, 29, and 30, 30, respectively. The cross heads are slidably mounted in a housing 32, and are engaged by shifting screws 34, and 35, which are placed between the guide rods `29, 29, and 30, 30, and in direct alinement with the rods 20, and 21. These screws are provided with intermeshing spur pinions 86, and 37, and the actuating sheave 39, is made fast to the upper screw 36, so that when the sheave is turned the upper screw turns with it, but the lower screw turns in the opposite direction, resulting in opposed longitudinal motion of the rods 20, and 21, transmitted through the cross heads 34, and 35. By means of the cross heads 27, and 28, and the guide 29, 29, and 30, 30, which straddle the shifting screws, a purely longitudinal motion is produced, completely eliminating any possible torsional strain which might be transmitted to the rods 20, 21, and tend to get the racks and screws out of alinement.

In operation the sheave 39, is turned, and as has been explained, the screws rotate in opposite directions with the resultant opposed .longitudinal motion of rods 20, and 21, so that racks 15, on the upper rod 20, rotate pinions 13, in one direction, while pinions 14, are equally rotated but in opposite direction by racks 16, on the rod 21. This motion is imparted to arms 9, and 10. Since the arms are oppositely disposed, this opposed motion either forces them both farther out or draws them nearer together, and through links 6, either opens or closes the window. It is obvious that similar motion will be equally transmitted to any number of pinions which may be placed to intermesh with their respective racks, and, therefore, any number of windows may be controlled by a single longitudinal motion of rods 20, and 21.

By employing the rack and pinion construction, we not only greatly decrease the amount of lost motion which occurs in devices of this sort, but also eleminate any lateral strains on the operating rod due to the weight of the sashes, since the only forces exerted on them are longitudinal. This prevents any distortion of these rods and keeps them from getting out of alinement, a very important factor, especially when a number of sashes are to be operated, and rods of some length are required. Furthermore, the rods slide betwen the grooves in the brackets 12, and pivots 11, and any strain on the pivots is away from the rack which prevents the rack from jamming, so that there is always an easy channel for the rods to slide in, and one which will not be affected by the position of the sashes because it is entirely formed in the solid bracket 12.

I-Iaving thus described our invention, we claim:

l. The combination with a pivoted closure, audits support, of a longitudinally movable operating rod ,f a toothed rack carried thereby an arm provided with a geared pinion intermeshing therewith. and a link pivoted to said arm and also to the member to be operated, a shifting screw attached to one end of said operating rod and means for rotating said shifting screw.

2. The combination with a pivoted clo- Sure and its support, of a longitudinally movable operating rod; a rack carried thereby; a bracket attached to said support; an arm provided with a geared pinion at one end, pivoted in said bracket.; said pinion intermeshing with saidrack in such a way that the racks are on the side of the pinion toward the closure; anda link pivoted at one end to said closure and at the other to' the arm. Y

3. rIlhe combination with a pivoted closure and itssupport; of a pair of longitudinally movable operating rods; a toothed rack carried by each rod; an arm with a geared pinion intermeshing with each rack, said arms being mounted on a single pivot and adapted to swing4 outwardly or inwardly when rotated in opposite directions; links pivoted to said arms and to said closure; and means wherebylongitudinal motion transmitted to onehrod causes the other rod t0 move longitudinally in the opposite direction, with consequent zopposed rotation of said pinions, whereby both arms move outwardly or inwardly.

4. The combination of a series of pivoted closures and their supports; supporting means attached to said supports; arms provided with pinions at one end pivoted therein, in upper and lower opposed relation; links pivoted to said arms and to said sashes; upper and lower operating rods, toothed racks carried thereby, intermeshing with the upper and lower pinions respectively, and means for causing theV operating rods to move in opposite directions, whereby' the upper pinions and arms will all move outwardly or inwardly in one direction, and the lower pinions and arms will all move outwardly or inwardly in the opposite direction.

5. In a sash operating mechanism, ya movable operating rod provided with toothed racks, operating arms provided with geared pinions, intermeshing therewith, said racks comprising upper and lower plates attached above and below said operating shaft.

6. In a sash operating mechanism, the combination of a longitudinally movable op.- erating rod, a toothed rack carried thereby, a rigidly supported bracket, a geared pinion pivoted therein intermeshing with said rack, and a groove cut in said bracket whereby said `rack is. 4supported and maintained in alinement with said geared pinion.

7'. In a sash operating mechanism, Ythe l combination of longitudinally movable operating rods, toothed racks carried thereby, rigidly supported brackets, geared pinions pivoted therein ntermeshing with said Vania, this twenty-fourth day of September, racks, and grooves out in said brackets cor- 1915.

responding one to each rack, whereby said THEODORE F. OECHSLE. operating rods are supported and said racks maintained in alnement With said geared ALBERT S' BANCROFT' pinions. Witnesses In testimony whereof, We have hereunto JAMES H. BELL, signed our names at Philadelphia, Pennsyl- E. L. FULLERTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, ID. C. 

